Shaheen, Sajida, et al. “Evaluation of Post Challenge Glucose Estimation for Diagnosis of Gestational Diabetes Mellitus (W.H.O. - Criteria 1999)”. Pakistan Journal of Pathology, vol. 17, no. 1, Aug. 2016, https://www.pakjpath.com/index.php/Pak-J-Pathol/article/view/189.